Henry warden



H. WARDEN.

Patented Oct. 31, 1882.

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UNITED STATES PATENT OEEicE.

HENRY WARDEN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE ATLANTIC REFINING COMPANY, OF SAME PLAGE.

FlLTERlNG PETROLEUM DISTILLATES FOR THE SEPARATION F PARAFFINE.

SPECIFICATION forming part of Letters Patent No. 266,929, dated October 31, 1882. Application filed September 22, i882. (No model.)

invention may be carried into effect, and Fig.

2 a sectional plan on the line-1 2, Fig. l.

As the cooling apparatus which I prefer to use forms the subjectof a separate application for a patent which was filed by me September 4, 1882, it will suffice to remark here that it consists of a refrigerating-box, A, into which pass a number of tubes, h, from a distributingi box, E, these pipes communicating with a rev ceiving-box contained in the refrigeratingchamber, and this box communicating through a pipe, fw, with the lter-press. Paraftne distillate from a petroleum-still is forced through a pipe,j', into the distributing-box, and is directed by suitable valves first into one tube of the series, then intonthe next tube, and so on, the first tube being again broughtinto service after all the others in succession have been used as passages for the petroleum distillate.

The filtering-press D, which I prefer, is ot' well-known construction, and hence need not be minutely described. It will suiiice to relmark that the par-affine 'distillate is forced Through the tube w into the ilter, and that the paraftine remains in the bags of the latter, while the oil iows from the outlets y into the bottom of the casing or box B, whence it may be discharged into any suitable receptacle. This casing B, which has suitable openings provided with doors, forms a rei'rigeratingchamber, within which the filtering-press is maintained in a comparatively cool condition, for I have found in practice that, in addition to the preliminary cooling of the petroleum distillate, it should be maintained in a cooled condition during iiltration. l 5o While the chamber B maybe refrigerated u in different ways, Iprefer to maintain it in a cool condition by rei'rigerating gas which has been used in connection with the cooler. This gas is introduced into the cooler through a 5; pipe, c, and passes out through a pipe, e, which I continue in the zigzag course shown in Fig.

2 throughout a chamber situated above, but com municating with thevret'rigerating-chamber B ofthe filter-press, the pipe passing` out to a 6o point where the gas can be compressed prior to its reintroduction into the cooler A.

`My invention may be applied to the ltration ot'any material which is best acted upon by the filter-press while in a cool condition.

Without restricting myselfl to the precise construction and arrangement of appliances herein described and illustrated, I claim as my invention- 1. The process herein described of press- 7o ltering petroleum distillates while the filtering-press is subjected to cooling intluences, substantially as set forth.

2. The process herein described of first cooling petroleum distillate and then maintaining 75 it in a cooled condition while it is being pressfiltered, as set forth. ,y

3. The combination ofa tiltering-press with a reirigerating-chamber in which the said press is contained, substantially as described.

In testimony whereof I have signed my name to this specication in the presence of two subscribing witnesses.

HENRY WARDEN.

Witnesses: 4

HARRY DRURY, HARRY SMITH. 

